If the tank empties sooner than it used to, sediment may be taking up space and insulating the heating element. A flush can help, but persistent short supply is an early sign of wear.
Noises come from water trapped under hardened sediment. They are a sign the unit is working harder than it should, which shortens its life.
If only the hot side runs brown, the tank is likely corroding from the inside. That is difficult to reverse and usually points to replacement.
Even a small puddle needs attention. Turn off the power or gas and the cold supply to the unit, then call us. A leaking tank cannot be patched safely.
Tank units typically last 8 to 12 years. If yours is older and showing any other sign, replacing it on your schedule is cheaper than an emergency swap.
Sediment noise and short supply come first
Rusty hot water means the tank is corroding
Any puddle at the base needs same-day attention
Plan a replacement once a tank passes ten years